# Help i screwed up!

**URL:** <https://forums.sandisk.com/t/help-i-screwed-up/406605>\
**Category:** External SSD for macOS\
**Created:** [February 3, 2012, 1:17am UTC](https://forums.sandisk.com/t/help-i-screwed-up/406605 "2012-02-03T01:17:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gereio](https://avatars.discourse-cdn.com/v4/letter/g/c2a13f/32.png) [@gereio](https://forums.sandisk.com/u/gereio)\
**Post date:** [February 3, 2012, 1:17am UTC](https://forums.sandisk.com/t/help-i-screwed-up/406605/1 "2012-02-03T01:17:47Z")

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have a studio edition drive 2 tb. &nbsp; I purchased a 2 tb wd green drive to make it 3tb. &nbsp; i installed the drive and left my A drive in. &nbsp;when i restarted i screwed up and formated the 2tb hard drive. &nbsp; &nbsp;If I plug in it only shows the 2tb no 1tb and not seeming to self start . &nbsp;solid light in the front. &nbsp; can i undo what i did and start over? &nbsp;any suggestion on how to fix so i can get the 1 and 2tb drive to become my 3tb backup? &nbsp;THANKS!

GE

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**Author:** ![Joe\_S](https://avatars.discourse-cdn.com/v4/letter/j/67e7ee/32.png) [@Joe\_S](https://forums.sandisk.com/u/Joe_S)\
**Post date:** [February 3, 2012, 3:48am UTC](https://forums.sandisk.com/t/help-i-screwed-up/406605/2 "2012-02-03T03:48:15Z")

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Is this the My Bool Studio II RAID drive? I don’t think you can just mix these drives.

Joe

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**Author:** ![gereio](https://avatars.discourse-cdn.com/v4/letter/g/c2a13f/32.png) [@gereio](https://forums.sandisk.com/u/gereio)\
**Post date:** [February 3, 2012, 10:47am UTC](https://forums.sandisk.com/t/help-i-screwed-up/406605/3 "2012-02-03T10:47:00Z")

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it is a My Book Studio Edition 2- &nbsp; the manual says to replace drive then wait for hours until it configures. &nbsp; I formated the drive instead. &nbsp;Wish I could get drive to original state then try again an see if that works.